Go Back   Montana Owners Club - Keystone Montana 5th Wheel Forum > GENERAL DISCUSSIONS > General Discussions about our Montanas
Click Here to Login

Reply
 
Thread Tools Display Modes
 
Old 10-08-2016, 09:17 AM   #1
leemedic
Montana Fan
 
Join Date: Apr 2013
Location: Lehigh Acres
Posts: 396
M.O.C. #13354
On board 12v battery question.

What is the life expectancy of the onboard 12 volt battery?

I know when the Montana is hooked to a shoreline, it charges the battery. While traveling, does the TV charge the onboard 12 volt battery?

Last night, I allowed the refrigerator to run on gas all night without 50 amp shoreline. The only thing running was the refrigerator. This morning the refrigerator indicated low D.C. Power. I would think the onboard battery would last longer than that.
leemedic is offline   Reply With Quote
Old 10-08-2016, 09:30 AM   #2
K0LCB
Montana Master
 
Join Date: Apr 2013
Location: Poplar Bluff
Posts: 2,750
M.O.C. #13395
There are several phantom draws on the battery, water heater ignighter, LP detector, radios
K0LCB is offline   Reply With Quote
Old 10-08-2016, 09:47 AM   #3
Irlpguy
Montana Master
 
Join Date: Oct 2012
Location: Chilliwack
Posts: 1,501
M.O.C. #12935
The life of your RV battery depends a lot on the type of battery used but should be a deep cycle Marine/RV battery. Prior to installing 2 Trojan 6 volt batteries I used two Interstate 12v deep cycle batteries for several years. On one of those batteries a cell went bad and constantly dragged down the still good battery. I still use that good 12v to power a winch in my workshop and it is 5 years old now.

I would confirm the battery/batteries you are using are in good condition since even one battery should run the electronics in the fridge overnight, if that was all that was running off of it. I suggest to every RV owner that they go and buy a hydrometer and use that to check each individual cell in their batteries. These are cheap and can be picked up at pretty much any Automotive supply store.

We travel all the time with our fridge on propane and the TV will certainly provide sufficient charge to offset what is being used by the fridge. My amplifier for my tire monitoring system is also powered when traveling and I have never had a problem.

Check your battery.
Irlpguy is offline   Reply With Quote
Old 10-08-2016, 11:46 AM   #4
DQDick
Montana Master
 
Join Date: Jun 2011
Location: Council Grove
Posts: 13,720
M.O.C. #11455
I would bet on a depleted battery. OEM batteries on my trucks seldom lasted more than three years and you can bet unless you specified otherwise the dealer put the cheapest one in they could get.
DQDick is offline   Reply With Quote
Old 10-08-2016, 01:01 PM   #5
jcurtis934
Montana Master
 
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 2,092
M.O.C. #13740
Agree that you are due to replace the battery. Yeah, they come with none from keystone and what goes in is dealer decision. Ours was interstate, but it still wasn't a group 27. I will be putting in two this time. John
jcurtis934 is offline   Reply With Quote
Old 10-08-2016, 02:00 PM   #6
TAKPAK
Montana Master
 
TAKPAK's Avatar
 
Join Date: Feb 2008
Location: Hillsboro
Posts: 537
M.O.C. #8238
I see by your post that you have a 2013 model Montana. They had the newer "smart" converters/chargers then, so that shouldn't be a problem. I would suspect a weak cell in the battery. Even a group 24 should last overnight. HOWEVER, that said, were any of the vent fans running? Was the hot water heater running? You already said the "fridge" was on. Yes, there are a lot of "phantom" draws, but still it should have run overnight.

The argument rages on about what batteries are best. Generally, if you are plugged in to shore power most all the time, then one GOOD 12 volt deep cycle will do. IF you occasionally dry camp for a weekend once in awhile, then I'd put two good 12 volt batteries in, for the extra amp hours. If you dry camp a LOT, or have solar systems, then I would go with the "golf cart" six volt batteries. The BIG difference is........the 12 volt batteries (depending on size) will have a bit more amp hours to draw from, assuming same number of batteries, i.e. two 12's (in parallel) or two 6's (in series). BUT, the six volt ones will stand up to REPEATED charge/discharge cycles a lot longer than the 12's would, due to their difference in construction. So, occasional dry camping.....one or two 12 volt batteries. Lots of dry camping, then six volt batteries will have a longer life span. And, if you have a generator, that changes things a bit too. Hope this helps...........
TAKPAK is offline   Reply With Quote
Old 10-08-2016, 09:15 PM   #7
chris199
Montana Fan
 
Join Date: Mar 2015
Location: SE
Posts: 476
M.O.C. #17167
Yeah our single 12v lasted less than a year...Just insufficient. Replaced with 2 Trojan T145's and haven't had an issue since. Having to charge up the battery at the storage lot with the truck just to raise the front landing gear was just too frustrating and drove the upgrade decision.
chris199 is offline   Reply With Quote
Old 10-17-2016, 10:31 AM   #8
Keith Schweizer
Seasoned Camper
 
Join Date: Sep 2008
Location: South Jordan
Posts: 67
M.O.C. #8841
When I purchased my 09', i ordered my trailer with 4-interstate 6 Volt (Golf cart) batteries. They lasted 7 years, which I don't think is all that bad. Installed this year the same type or Interstates. Any more I hear most batteries last only 4-5 years.
__________________
2009 2955rl, Goodyear tires, Mor-ryde wet bolt kit, 50 amp progressive hard wired surge protector, solar panel, 4-6 volt Interstate batteries with charge indicator, Heavy duty tow hitch for towing Jeep,2-2000 watt Honda generators, Back up camera
2015 F 350 Super duty, 6.7,Lariat,Ride rite air bags
Keith Schweizer is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Battery Question pineranch Maintenance 6 01-31-2013 07:42 AM
Battery Question JFranklin General Discussions about our Montanas 14 02-17-2010 04:17 PM
New battery question drjjj Maintenance 31 02-12-2010 12:13 PM
BATTERY BOX QUESTION jackel1959 Montana Problems, Problem Solving & Technical Help 14 12-03-2009 12:48 PM
Battery question drjjj Maintenance 1 03-10-2008 06:16 AM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 12:54 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2017, vBulletin Solutions, Inc.